我有一个电子商店。在用户篮子中，用户添加了一些产品。现在他/她想要改变（增加或减少）产品的数量（数量）。我用ajax写了这个部分，但它没有用。一切似乎都对！我不知道什么是错的！请帮帮我......
＆＃34;最后我添加了＆＃34; update_order.php＆＃34;页面代码。＆＃34;
<?php
if (session_status() == PHP_SESSION_NONE) {
session_start();
}
include('database.php');
$object=new myclass_parent;
?>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script src="js/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="css/style.css" />
<link href="css/bootstrap.min.css" rel="stylesheet"/>
<link href="css/bootstrap.rtl.min.css" rel="stylesheet"/>
<script type="text/javascript">
$(document).ready(function () {
$(".navbar-right li .navbar-brand").hide();
});
</script>
<title></title>
</head>
<body>
<?php
include('header.php');
?>
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<div class="container content info">
<h4>سبد خرید</h4>
<div class="row">
<div style="display:none;margin-top:10px;" id="err_alert" class="alert alert-danger ">
<span id="empty_err"> </span>
</div>
<div class="table-responsive">
<table class="table my_table">
<thead>
<tr>
<th>فروشنده</th>
<th>توضیحات کالا</th>
<th>تعداد</th>
<th>قیمت واحد</th>
<th colspan="2">قیمت کل</th>
</tr>
</thead>
<tbody>
<?php
if(isset($_COOKIE['mybasket'])){
$query="select * from tblbasket where cookiename=? and payment=0";
$array=[$_COOKIE['mybasket']];
$result_array=$object->select($query,$array);
foreach($result_array as $result){
$productid=$result['productid'];
$count=$result['count'];
$query2="select * from tblproducts where id=?";
$array2=[$productid];
$result_array2=$object->select($query2,$array2);
$img=$result_array2[0]['img'];
$title=$result_array2[0]['title'];
$price=$result_array2[0]['price'];
$info=$result_array2[0]['info'];
?>
<tr id="<?php echo $productid; ?>" class="pitem">
<td rowspan=''><a href="http://amazoon.com">amazoon.com</a></td>
<td>
<img src="<?php echo $img; ?>" width="100" height="80"/>
<div>
<strong><?php echo $title; ?></strong>
<p><?php echo $info; ?></p>
</div>
</td>
<td>
<input style="width:50px" type="number" id="pcount" class="pcount"
onKeyDown="return checknumber(event);" min="1" value="<?php echo $count; ?>">
</td>
<td><span id="pprice"><?php echo $price; ?></span> تومان</td>
<td><span id="kol_price"><?php echo $count*$price; ?></span> تومان</td>
<td><a style="cursor:pointer;" class="remove"><img src="images/delete.png" alt="حذف محصول" title="حذف محصول"/></a></td>';
<?php
}//foreach
?>
</tr><!--basket_items-->
</tbody>
</table>
<br/>
</div>
</div>
<?php
}//isset cookie
?>
<div class="row">
<div class="col-12">
<table class="table-responsive tbl jamkharid">
<thead>
<tr><th>پیش فاکتور خرید</th></tr>
<tr><th>مبلغ کل</th><th>مالیات 9%</th><th>هزینه ارسال</th> <th>مبلغ پرداختی نهایی</th></tr>
</thead>
<tbody>
<td><span id="jam_kharid"></span> تومان</td><td><span id="maliat"></span> تومان</td>
<td><span id="delivery">0</span> تومان</td><td><span id="jam_kharid_final"></span> تومان</td>
</tbody>
</table>
</div><!--col12-->
</div><!--row-->
<div class="row">
<?php if(isset($_SESSION['email'])){ ?>
<a href="info.php" class="button">مرحله بعد</a>
<?php }//if
else{
?>
<a href="login_register.php" class="button">مرحله بعد</a>
<?php }//else ?>
</div>
</div>
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<!--------------------------------->
<?php
include('footer.php');
?>
</body>
</html>
<script>
var timer;
function jam_kharid(){
var amount=0;
var buy_amount=0;
clearTimeout(timer);
timer=setTimeout(function(){
$(".pitem").each(function(index, element) {
var pcount=$(this).find("#pcount").val();
var pprice=$(this).find("#pprice").text();
amount=amount+parseInt(pcount)*parseInt(pprice);
buy_amount=(1.09*amount).toFixed(0);
});//each pitem function
$(".pitem .pcount").change(function(){
var pcount=$(this).val();
var pprice=$(this).parents(".pitem").find("#pprice").text();
var kol_price=parseInt(pcount)*parseInt(pprice);
$(this).parents(".pitem").find("#kol_price").text(kol_price);
jam_kharid();
//****************************************************************************************************************
var productcount=pcount;
var productid=$("#pcount").parents(".pitem").attr('id');
alert(productid);
$.ajax({
url:'update_order.php',
type:'POST',
data:{productid:productid,cookiename:<?php echo $_COOKIE['mybasket']; ?>,productcount:productcount}
})//ajax
.done(function(msg){
alert(msg);
})//done
//****************************************************************************************************************
});//change
$(".jamkharid").find("#jam_kharid").html(amount);
$('.jamkharid').find("#maliat").text(amount*0.09);
$('.jamkharid').find("#jam_kharid_final").text((1.09*amount).toFixed(0));
},600);
}//jam_kharid
jam_kharid();
function khali(){
var l=$('.pitem').length;
if(l==0){
$('#err_alert').show(300); $('#err_alert #empty_err').show(); $('#err_alert #empty_err').html('هیچ محصولی در سبد خرید شما موجود نمی باشد!');
$('.my_table').hide();
$('.jamkharid').hide();
}
}//function p_length
khali();
$(".remove").click(function(){
var id_pitem=$(this).parents(".pitem").attr('id');
var pitem_parent=$(this).parents(".pitem");
$.ajax({
url:'delete.php',
type:'POST',
data:{id:id_pitem}
})//ajax
.done(function(){
pitem_parent.remove();
alert('محصول مورد نظر حذف شد');
jam_kharid();
khali();
})//done
})//remove click function
function checknumber(e){
if( (e.keyCode==65 && e.ctrlKey) || (e.keyCode>=35 && e.keyCode<=40) || ($.inArray(e.keyCode,[8,46])!=-1) ){
return;
}//if
if( e.shiftKey || ((e.keyCode<48 || e.keyCode>57) && (e.keyCode<96 || e.keyCode>105)) ){
e.preventDefault();
}//if
}//checknumber
</script>
////////////////////////////////////////////////////////////////////////////////
update_order.php :
////////////////////////////////////////////////////////////////////////////////
<?php
include('database.php');
$object=new myclass_parent;
$product_id=intval($_POST['productid']);
$cookie_name=$_POST['cookiename'];
$product_count=intval($_POST['productcount']);
$query_update="update tblbasket set count=? where cookiename=? and productid=? and payment=0";
$array=array($product_count,$cookie_name,$product_id);
$object->myquery($query_update,$array); echo $product_id;
?>